Yamatake SDC35, User Manual

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4-10
Chapter 4. WIRING
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Connection method for the motor drive relay output (R1)
Handling Precautions
• When a relatively high voltage (e.g., 100Vac) motor power supply is
to be connected to the motor drive relay output, use a separate
external relay in conjuction with the built-in relay.
• Do not run the cables of motor drive relay terminals 13, 14 and 15
together with the cables of MFB input terminals 7, 8 and 9 in the
same conduit. Do not use one 6-core cable for all these connections.
Doing so might cause a malfunction due to motor start-up noise.
• Avoid setting the PID control such that the output excessively repeats
ON-OFF operations.
Doing so might shorten the life of the built-in relay.
If [C59: Motor long life mode] is set at “1,” the number of relay
operations can be reduced with almost no influence on the control
results.
• When [C57: Position proportional type] is set at “2” or “3,” connections
to MFB terminals 7, 8 and 9 are not necessary. (This is the case of
control without a feedback function.)
• When [C57: Position proportional type] is set at “0” or “1” with motor
feedback function (MFB enabled), be sure to execute [C60: Motor
auto adjust].
• When [C57: Position proportional type] is set at “2” or “3” without
motor feedback function (MFB disabled), be sure to input the value of
[C63: Motor full close – full open time] exactly.
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Noise Preventive Measures
The power is taken from the single-phase instrument power supply to consider
noise preventive measures.
If the noise from the power supply is large, an appropriate insulation transformer
is added to the power supply and an appropriate line filter must be used.
(Yamatake's line filter model No.: 81446364-001)
If the noise has a fast rising edge, an appropriate CR filter must be used.
(Yamatake's CR filter model No.: 81446365-001)
Handling Precautions
After the noise preventive measures have been taken, do not bundle
the primary and secondary sides of the insulation transformer together
or lay/route them in the same conduit or duct.
7
8
9
Y Open
Close
T
G
MFB Feedback resistance:100 to 250
Ω
CLOSE
OPEN
13
14
15
Motor drive relay